Improvement in nut-fastenings



1:. MYERS.

Nut Fastener. N0.108,381. Patented O0t.18,1870.

' Wt in 0.586411: Inventor:

MPETERS. PHQTOJJTHOGRAPHER. WASHINEYON. 0 c.

clotted swa FREDERICK MYERS, OF NEW YORK, N Y.

Letters Patent No. 108,381, dated October 18, 1870.

IMPROVEMENT IN NUT-FASTENINGS.

The Schedule referred to'in these Letters Patent and making part 01' the same.

To all whom it may concern:

Be it known that I, FREDERICK Mrnns, of the city of New York, in the county and State of New York, have invented new and useful Improvements in Nut- Fastener; and I do hereby declare that the following is a full, clear, and exact description 'of the same, reference being bad to the accompanying drawing and to the letters of reference marked thereon, wherein- Figure 1 represents a front elevation of the bolt, exhibiting the grooves for confining the key-piece.

Figure 2 represents a transverse vertical section through middle of the nut and key-piece.

Figure 3 is a detail front elevation of the bolt, nut, and key-piece.

Figures 4 and 5 are plan views of the key'piece.

My invention is designed to provide abolt and keypiece for firmly holding and locking the nut, to prevent it from loosening from the bolt when the nut has been rotated into the required position.

A A A A represent the keyepiece, which may be constructed of any suitable metal.

D D represent the groovesin the bolt 0 for confining the key-piece A. These grooves are arranged on two sides of the bolt, opposite to each other, forming a half square within the grooves. These grooves maybe cut on all the four sides of the bolt, thus forming a square which will not alter the construct-ion'of the key-piece A.

The key-piece Ais provided with a slot, B, and four points, 0 o c c. The slot B is inserted within the grooves of the bolt I).

The slot B should be constructed the same in width as the square formed within the grooves D, so that the sides of the slot B rest firmly against the sides of the square formed within the grooves of the bolt 0. It is by this'means the key-piece A is prevented from turning on the bolt.

The key-piece A, having .becn inserted within the grooves D in the proper position required, the points 0 c c c are bent over against the sides of the nut E, which prevents the nut from turning, thus looking it firmly.

The key-piece A is inserted within the grooves on the upper side of the nut.

It is found best, on first using the key-piece and bolt, to bend over only two points, as shown at fig. 4, marked 0 0'. These two points are suflicient to" hold the nut firm to the bolt, it being found necessary, in some cases, in a short time, to take up the slack which may be produced by wear and settling.

Sometimes, in bending back the points to free the nut, they are liable to break oil, in which case the remaining two points can be used. This will be found valuable in connecting rails for railroads newly laid, which are liable to settle.

I may, if considered necessary, construct the points a c o c, of the key-piece A of such a length as to hold a double 'nut, if desired.

Ldo not wish to confine my invention to the particular construction of the key-piece, whereby 1am enabled to use but four points, as I may use four or more points fordifferent shaped nuts.

Having thus fully described my invention,

\Vhat I claim, and desire to secure by Letters Patent, is-

, The bolt 0, constructed as shown, and provided with the grooves D, in combination with the nut E and key-piece A, substantially as shown arid described.

FREDERICK MYERS- Witnesses:

WM. F. MCNAMARA, PHILIP VAN-RENSSELAER. 

